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发表于 2008-11-12 21:40:34
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来自: 中国上海
原帖由 freeshaw1 于 2008-11-12 11:57 发表 http://www.3dportal.cn/discuz/images/common/back.gif
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/ |* F7 L# `$ l$ o; p/ N2 S+ o版主回答不对,UPVC的U是UNPLASTIZED的缩写,未增塑的意思,通常UPVC或者PVC-U都翻译成硬聚氯乙烯,与加大量增塑剂的软PVC相对应.
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另,交联的英文词是 cross-link, 不是USA中的UNITED. & u: t$ ]: W& k: [
9 K) m7 \7 g( g) N5 [9 M1 ]请参考下列标准:
0 b( z. v! p; [& S" b6 G; CASTM F2080-2006 Standard Specification for Cold-Expansion Fittings With Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe' n) ], y8 X0 |: ^
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ISO 4422-3-1996 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply -- Specifications -- Part 3: Fittings and joints9 Z( R3 i5 Q H5 I9 b+ Q
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BS 3505:1986 Specification for unplasticized polyvinyl chloride (PVC-U) pressure pipes for cold potable water
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, t1 T3 j! h( \6 z6 m7 l/ vISO 21138 :2007 Plastics piping systems for non-pressure underground drainage and sewerage -- Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) 1 c3 p+ y! R1 u1 O, Q B. H3 Y
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交联聚氯乙烯的缩写是XLPVC, 版主可以以此为关键词搜索的. |
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